Package:Bash

Revision as of 18:05, October 2, 2014 by Pytony (Talk | contribs)

app-shells/bash


Source Repository:Funtoo Overlay

Summary: The standard GNU Bourne-again shell.


Use Flags

bashlogger
Log ALL commands typed into bash; should ONLY be used in restricted environments such as honeypots
mem-scramble
Build with custom malloc/free overwriting allocated/freed memory
net
Enable /dev/tcp/host/port redirection
plugins
Add support for loading builtins at runtime via 'enable'

Bash


This is the ebuild for bash, the standard shell for Funtoo Linux systems.

Bash is the GNU Project's Bourne Again SHell, a complete implementation of the IEEE POSIX and Open Group shell specification with interactive command line editing, job control on architectures that support it, csh-like features such as history substitution and brace expansion, and a slew of other features. [1]

Learning Bash

The following articles, written originally for IBM developerWorks by Daniel Robbins, serve as an excellent introduction to the bash shell:

Moving on Command Line

Shortcut Description
Tab Autocomplete
Ctrl + r Search as you type from lastlog
Ctrl + a Move to the start of line
Ctrl + e Move to the end of line
Ctrl + k Cut from cursor to the end of line
Ctrl + w Cut from cursor to the previous whitespace
Ctrl + c Clear line
Ctrl + l Clear screen
Alt + f Move one word forward
Alt + b Move one word backwards
Alt + d Cut from cursor to the end of word
Alt + backspace Cut from cursor to the start of word

Bash Completion

See bash completion page.

Configuration Files

~/.bashrc

~/.bashrc gets loaded on bash startup. You can source files, put aliases, functions and export variables there.

~/.bashrc: bash runtime configuration (bash source code)
source /etc/profile.d/bash-completion.sh
 
export EDITOR="vim"
 
alias mv='mv -v'
alias cp='cp -v'
alias rm='rm -v'
 
alias e='emerge'
alias eu='emerge -uavDN --with-bdeps=y @world'
 
alias used='cat  ~/.bash_history | sort | uniq -c | sort -n'
 
calculator() {
        echo "$@" | bc
}